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It’s getting more and more difficult to know which sources to
trust online. This helps explain why lists such as this one are
consistently some of the most read and shared: people want (no,
need) to know that the content they’re reading is
reliable and trustworthy.

When it comes to determining the "top 50" of anything, there
are any number of variables that can come into play. Some of the
ones I considered for this list included:

Usefulness and reliability of blog and social-media posts

Advanced knowledge in one or more areas of online marketing

Size of audience

Level of engagement on their blog or social media

Ability to create and sustain a sense of community with their
audience

Awards received

Books written

I’m absolutely certain I’ve left some amazingly successful online
marketers off this list. If I’ve forgotten you or someone you
know, please leave a comment at the end of this post.

2. Matt Cutts doesn’t normally
make it onto these lists, but there’s no doubt he’s near the
top in terms of online influence. He's the star of Google’s Webmaster videos and current head
of Google’s Webspam team.

14.Chris Brogan is a New
York Times bestselling author, business strategist and online
marketing expert. According to his bio, his consulting is
“business strategy meets powerful personal development.”

16. John Boitnott, a journalist
and digital consultant, has worked at TV, newspapers, radio
and Internet companies in California for 20 years. He has
written for NBC, Entrepreneur,
USA Today and Venturebeat, among others. He now invests in
startups and works primarily with tech entrepreneurs to scale
their businesses.